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US 4,920,899 AGranted
Modular furnace and methods of repairing same
AssigneeAmerican Telephone and Telegraph Company
InventorsRobert F. Blundy, Charles E. Dunbar
Life of this patent
Estimating the term…
Abstract
A refractory furnace (10) is constructed to facilitate repair of worn or damaged refractory portions while the furnace is maintained at near-operating temperature. A sidewall (40) of the refractory furnace is comprised of a plurality of modular sections (85) each of which includes a refractory lining (87). One or more modular sections may be selectively replaced when becoming worn or damaged. Replacement is accomplished by external access and removal of the worn or damaged modular sections.
Claims13
A furnace, comprising:
- a frame;
- and
- a refractory lining which is attached to and supported by said frame, said refractory lining comprising:
- a bottom portion which forms a leakproof reservoir for holding molten material;
- a roof portion which is spaced above said bottom portion;
- and
- a sidewall portion which is disposed between said bottom portion and said roof portion and which comprises a plurality of modular sections which are capable of being removed individually without the need to enter the furnace to permit replacement of individual ones of the modular wall sections.
4 more elements
A method of repairing a furnace, said method comprising the steps of:
- providing a furnace which includes a frame, a bottom refractory portion for holding molten material, a roof refractory portion which is positioned above the bottom portion and a sidewall refractory portion which is disposed between the bottom portion and the roof portion and which comprises a plurality of modular refractory sections which are capable of being removed individually without the need to enter the furnace to permit replacement of individual modular wall sections;
- from a position external to the furnace, applying forces to a modular section which is in need of replacement to remove the modular section which is in need of replacement from the sidewall portion;
- and
- installing a replacement modular section in place of the removed modular section.
1 more element
Dependencies are inferred from the claim text.